Excelsior-cutting machine



(No Model.) 4 SheetsSheet 1.

O. G. SMITH. EXOELSIOR CUTTING MAGHINB.

No. 447,846. Patented Mar. 10, 1891.

(110 M01181.) 4 Sheets-Sheet 2.

EXOELSIOR CUTTING MACHINE.

No. 447,846. Patented Mar. 10,1891.

WITNESSES (No Model.) 4 Sheet's-Sheet 3,

0. G.-SMITH. EXGELSIOR CUTTING MACHINE.

No. 447,846. Patented Mar. 10,1891.

(No Model.) 4 Sheets-Sheet 4.

O. G-. SMITH. EXGELS'IOR CUTTING MACHINE;

No. 447,846. Patented Mar. 10,1891.

WITNESS 5 UNITED ST T S PATENT ,OFFICE.

CHARLES G. SMITH, OF DETROIT, MICHIGAN.

EXCELSlOR-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 447,846, dated March10, 1891.

Application filed June 23.1890- Serial No. 356,428. (No model.)

f all whom it may concern.-

Be it known that I, CHARLES GILES SMITH, a citizen of the United States,of Detroit, in the county of lVayne and State of Michigan, have inventednew and useful Improvements in Excelsior-Cutting Machines; and I herebydeclare that the following is a full,clear, and

exact description thereof, reference being had to the accompanyingdrawings, which form a part of this specification,

My invention relates to an improvement in excelsior-cutting machines. I

The objects of my invention are to provide positive means forautomatically feeding the block to be cutinto excelsior to the knives,to provide the means for cleaning the rollerslitter from shavings orother waste, and means for more readily and accurately gaging the set ofthe cutting-knives with one another; and it consists in the means ofcom1nunicating motion from the reciprocating cutterplate to thefeed-plate carrying the block of wood to be cut into excelsior, and thedevices for cleaning the spaces between the slittingblades of theroller-slitter, and in the 0011- struction of the shaving-knife bladesand the gages by which the interval between the knives and the thicknessof the excelsior is determined, and in the peculiar combination,construction, and arrangement of the several parts, as hereinafter moreparticularly described and claimed.

Figure l is a side elevation showing one side of the entire machine.Fig. 2 is a side elevation showing the opposite side of the machine, aportion being broken away to show the section of the feed mechanism.Fig. 3 is a front elevation showing the position of the knives. Fig. 4is a rear elevation showing the feed mechanism. Fig. 5 is aview of therollerslitter cleaner, with a section of the roller-slitter. Fig. 6 is avertical sectional view of the journal-box of the rollerslitter. Fig, 7is the roller-slitter, partly in section, showing its construction. Fig.8 is one of the washers of the roller-slitter. Fig. 9 is one of theknives of the roller-slitter. Fig. 10 is a sectional view of the rollerslitter and cleaner on the line m in Fig. 5. Fig. 11 is a sectional viewof the roller slitter and cleaner on the line y y in Fig. 5. Fig. 12 isa perspective view of a part of the cutter. Fig. 13 is an enlarged Fig.15 is a In the drawings, A A are the standards of the main frame,fastened together by girths, rods, or bolts, or in any other suitableway.

A is a table extending to the rear from the main frame, of a properheight, and supports the feed mechanism and the block of wood to be cutinto excelsior.

B is a standard arising from the table A and supports the feed-plate andthe mechanism actuating it.

b is a vertically longitudinally slotted arm extending from the standardB in a direction opposite to the forward motion of the feed plate 0.

I) is a stud or hub projecting from the standard B in the same directionas the arm I). This hub is perforated through its center to allow thepassage of the screw-threaded shaft D, which is provided with and guidedat its outer end by the guide-pin d, which runs in the slot in the armI). This pin extends through the arm I) and curves under the table A andcarries at its lower end a stud d. The inner end of the screw-shaft D isconnected by a suitable joint to the feedplate 0. I

c c are guide-plates, which are attached to the side edges of thefeed-plate and extend below the edge of the table A and are theninclined inward to engage with the edge of the table, which is beveleddownward for that purpose. I

c c are spurs projecting from the front face of the feed-plate to engagewith the block of wood to be cut. 1

E is a beveled spur-wheel cored out at its center and iuteriorlyscrew-threaded for the reception of the screw-threaded shaft D, ro-

tating on or against the hub b.

B is an arm projecting from the standard 13 and bent to projectrearwardly and slotted for the. reception of the ratchet and pawl of 1 vthe feed mechanism.

F is a shaft supported by the arm B at its outer end in suitable journalbearings. A spur-wheel F is keyed on the inner endof. the shaft F andmeshes with the spur-wheel E. A crank-wheel u is properly keyed on theouter end of the shaft F and is provided with a crank pin or handle forrotating it by hand.

J is the cutter-plate carrying the slitterroller and shaving-knives,which reciprdcates in ways or guides y Q] on the main frame.

j is an inclined plane on the rear face of the cutter-plate which movesthe bar backward.

X is the pitman by which the cutterplate is reciprocated, and which isattached at its lower end to the crank-pin or any convenient rotatingshaft.

h h are slotted brackets or hangers on the under side of the table A.

G is a bar which reciprocates longitudinally in the slots in the hangersh h. This -bar is slotted at its inner end for'the reception of thefriction-wheel I, which is pivoted in the slot and runs in contact withthe inclined plane on the cutter-plate.

I is a coiled spring, attached at one end to the hanger h and at theother to the bracket 1" 011 the bar G, and serves to draw the bar G backas the inclined plane drops down with the cutter-plate.

'i is a set of friction-rollers on thehanger 72, to facilitate themovement of the bar G.

g is a nut orstud on the bar G, with an outwardly-inclined plane on itsupper side.

07. is an arm extending from the table A over the bar G and slotted atits outer end for the reception of the lever N.

N is a lever fulcrumed in the slot at the outer end of the arm 'n andpivoted to the outer end of the bar G at its lower end, and at its upperend to the link N. This link is pivoted at its inner end to the arm 13*,which is journaled on the shaft F.

P is a ratchet-wheel keyed on the shaft F.

O is a pawl pivoted on the arm B and engages with the ratchet-wheel P.

B is an arm attached to the upper end of the arm 13*, and carries thespring 0, which throws the pawl O in engagement with the ratchet-wheelP.

Q is a lever pivoted to the arm B provided with the latch or catch q,and passes through a slot in the pawl 0. When it is desired to hold thepawl out of engagement with the ratchet-wheel to allow of the giggingback of the feed-plate, the upper arm of the pawl is pressed back andthe lever Q brought down, and the latch q catches and holds the pawlaway from the ratchet-wheel.

H is a bar pivoted to the rear frame of the table A at 'v, and extendsacross and a little beyond the table and rests on the stud or bracket 9on the bar G. By dropping this lever or'bar down between the studg andthe frame of the table the motion of the bar G will be arrested and thefeed mechanism will remain at rest.

The operation of this part ofany invention is as follows: As thecutter-plate carrying the nclined plane ascends after makinga cut theinclined plane forces the bar G outward. The lower end of the lever N isthrown out and the upper end inward, impelling the link and arm Bforward. The pawl O on the arm B is carried forward with it, and as itis in engagement with the ratchet-wheel on the shaft F, that is turnedwith the ratchet-wheel, the shaft F turns the wheel F, and that turnsthe wheel E. The screw-shaft is moved inward, and the block of wood tobe cut is thus fed up to the knives. When it is desired to gig back thefeed-plate, the pawl O is held out of engagement with the ratchetwheelby the latch Q, and the shaft F r0.- tated by handuntil the movement iscompleted. The remaining portion of the old block can then be removedand a new one put in and the machine started by releasing the pawl andthe bar G by raising the latches Q and II.

YY are grooved guides or ways, in which the cutter-plate reciprocates,bolted on the inside of the standards A A of the main frame.

J J are the posts of the frame of the cutter, held together by girts atthe top and bottom. These posts may be made of three bars a a a the twoouter bars a and a being of greater width than the inner one a, in orderto form the groove for the reception of the knifeblades J J and the studon the back of the slitt'er-roller journal-box. If preferred, the postsJ J maybe made of a single bar and the groove cut out.

J is a plate inserted in the groove in the frame of the cutter-platebelow the shavingknives and roller-slitter. The front side of the blockto be cut should rest against this plate when the cutter-plate beginsits downward stroke. The front face of the plate should be the one-tenthof an inch or the full depth of the feed for the cut back of the edge ofthe groove in which it is inserted, so that the edge of the shavingknifenext above it should project over it the one-hundredth part of an inch.

J J J are the shaving-knives, all of the same thickness, inserted in thecutter-frame in the grooves in the sides of the posts.

J are plates inserted between the ends of the knife-blades and the sidesof the grooves in the posts of the cutter-frame, and are perforated forthe passage of the set-screw by which they are held in place. Each plateis the one-hundredth part of an inch thicker than the one next belowit-that is, the difference in the thickness of these plates should bejustthe thickness of the excelsior when cut. These plates are insertedat the front and back of the knife-blades and gaged according to therequired set of the knife-blades, so as to cause each blade to projectthe thickness of the plate beyond the blade next be low, and so onthrough the series. The set- ITO screws J secure the knife-blades J andgageplates in the grooves in the posts.

J is a block placed in the gioov'es under the opposite ends of eachalternate knifeblade to give the cutting-edge an angle, which not onlyenables the knife to cut more easily, but also curls the excelsior,which is a desirable feature. The blocks J J v are beveled from therearorinside to the front orout-side,

rib T on its outer side to slide in the grooves in the posts of thecutter-frame.

T is a recess cut in the front edge of the journal-box T, beveledoutward both upward and downward, the innerend being circular to form apart of the journal-bearing of the ournal of the roller-slitter. Thisrecess is closed by the truncated triangular cap or piece 2, which iscircularly recessed at its in ner end to complete the journal-bearing ofthe roller-slitter. The cap it is held in place by the bolt i, whichpasses through the journal-box T and the cap, and is secured by the thenut 25 on its lower end. A rectangular slot S is cut in the journal-boxT at its inner upper corner, having an inclination of about forty-fivedegrees with the edges of the journal-box. The cap S held in position byproper screws, closes this slot at its outer ends.

S is a square bar having its ends cut away to form a rectangular tenonto fit in the rectangular slot S in the journal-box T. A screw-thread iscut on each end of the bar above the shoulder of the tenon.

S S are flat peices of steel plate rectangular on two sides and on oneend. The other end is circularly recessed, the radius of the circlebeing a little more than the radius of the washer r on theroller-slitter. The thickness of these plates should be a little lessthan that of the washer r.

S are rectangular plates or washers of smaller size than the plates Sand thicker than the cutting-blades of the roller-slitter. The plates Sand S are all perforated by a square perforation to fit on the bar S,and are placed alternately on the bar and held in position by thescrew-nut on each end of the bar. The plates must beso arranged that thecircularly-recessed end of the plate S may be move all shavings andwaste from the space between the cutter-blades of the slit-ter-roller,thus allowing them to "cut the full depth of the feed. The bar S is heldin position by the cap S That I claim as my invention is-- 1. In anexcelsiorcutting machine, the combination of the main frame in which thecutter-plate reciprocates with the table which supports the feedmechanism, the cutter-plate carrying the inclined plane, the inclinedplane which pushes out the bar extended beneath the table, the spring toretract the bar, the stud on the bar which supports the lockinglatch,and the locking-latch pivoted to the table, all substantially asdescribed.

2. In an eXcelsior-machine, the combination of the main frame A A, inwhich the cutterplate reciprocates with the table A, which supports thefeed mechanism, the cutter-plate J, which carries the inclined plane j,the inclined plane j, which pushes the bar G outward, the bar G,suspended in hangers beneath the table A, the spring I for retractingthe bar G, the lever N, fulcrumed on the arm n and pivoted at its lowerend to the bar G, and connected at its upper end by the link N to thefeed mechanism, all substantially as described.

-3. In an eXcelsior-cutting machine, the combination of the main frame AA, in which the cutter-plate reciprocates, with the table A, v

which supports the feed mechanism, the cutter-plate J, which carries theinclined plane j, the inclined plane j, which impels the bar G outward,the bar G, reciprocating in the hangers under the table A, the spring Ifor retracting the bar G, the lever N, vibrated by the bar G andfulcrumed on the arm n of the table A, the link N, connecting the leverN to the arm B, the arm B, journaled on the shaft F and carrying thepawl O, the pawl O, which engages with the ratchet-wheel P, and theratchet P, which rotates the shaft F of the feed mechanism, allsubstantially as described.

4. In an excelsior-cutting machine, the combination of the main frame Awith the table A, supporting the feed mechanism, the

standard B, arising from the table A, the

screw-shaft D, supported in the spur-wheel E by the' standard B, thefeed-plate G, actuated by the screw=shaft D, the spur-wheel E,screw-threaded interiorly to engage with the screw-shaft D, thespur-Wheel F on the shaft F and meshing with the spur-wheel E, the shaftF, journaled on an arm of the standard B, the ratchet-Wheel P, keyed onthe shaft F, the pawl O, pivoted to the arm. 13 and engaging with theratchet-wheel P, the arm B journaled on the shaft F, the link N,connecting the arm B to the lever N, the lever N, pivoted to andvibrating on the arm n and connected at its lower end to the bar G, thebar G, reciprocating in hangers under the table A and actuated by theinclined plane j,

IIO

the inclined plane j on the cutter-plate, and the cutter-platereciprocating in the main frame A, all substantially as described.

5. In an excelsior-cutting machine, the co mbination of the posts of thecutter-plate provided with grooves for the reception of theknife-blades, with the knife-blades and the gage-plates for gaging thecut of the knives, all substantially as described.

6. In an excelsior-cutting machine, the combination of the journal-boxof the roller-slitter with the roller-slitter journaled in thejournal-box, and the roller-slitter cleaner attached to the journal-boxof the roller-slitter, all substantially as described.

'7. In an eXcelsior-cutting machine, the combination of theroller-slitter for slitting the block and the roller-slitter cleaner forfreeing' the roller-slitter from shavings, all substantially asdescribed.

8. In an eXcelsior-cutting machine, the com bination of the posts of thecutter-plate, provided With grooves for the reception of theknife-blade, with the knife-blades for cutting the excelsior, theroller-slitter forslitting the block, and the roller-slitter cleaner,all substantially as described.

9. In an excelsior cutting machine, the combination of the table whichsupports the feed mechanism with the standard B, arising from the table,the screw-shaft D, supported in the spur-wheel E on the standard B, thefeed plate 0, actuated by the screw-shaft D, the spur-wheel E,interiorly screw-threaded to engage with the shaft D, the spur-Wheel Fon the shaft F and meshing with the spurwheel E, the shaft F, journaledon an arm of the standard B, the ratchet-Wheel P, keyed on the shaft F,the pawl O, pivoted to the arm B and engaging with the ratchet-wheel P,the link connecting the arm B to the lever N, and the lever N, pivotedto and vibrating on the arm a, all substantially as described.

CHARLES G. SMITH.

v \Vitnesses:

GEORGE GREEN, GUY A. SMITH.

